Protocole d'echantillonnage d'une enquete epidemiologique de population

ABSTRACT

Leading sampling for epidemiologic survery sin general population is a very hard task beause of the methodological difficults. Cluster sampling are after used because it's easier to investigate population grouped in clusters. However, the inegality of clusters sample size and the heterogeneity of clusters have to be taking into account, other wise the validity of estimations shoud be affected